Molekula
Isoamyl alcohol
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Isoamyl alcohol (3-methyl-1-butanol) is a branched-chain primary alcohol used as a solvent, flavoring agent, and in the synthesis of esters for perfumes and fragrances. It is also employed in pharmaceuticals, adhesives, and as a denaturant for ethanol. This chemical has a CAS number of 123-51-3, with the molecular formula (CH3)2CHCH2CH2OH and a molecular weight of 88.15 g/mol. It is stored at ambient temperatures and carries a signal word of "Danger" due to its hazardous properties. Molekula supplies Isoamyl alcohol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 L — £110.00 per pack ex VAT · £132.00 inc. VAT
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100 mL — £40.00 per pack ex VAT · £48.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | clear liquid, free from any suspended matter |
| Water | ≤0.3% |
| Colour | ≤25 |
| Purity | ≥98.0% |
| Acid (Based on acetic acid) | ≤0.01% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 43 °C |
| Transport Class | 3 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Oily, clear liq |
| Odour | Characteristic, disagreeable odor |
| Melting Point | -117 °C |
| Boiling Point | 132 °C |
| Density | 0.8 (relative, water = 1) |
| Solubility (other solvents) | Soluble in ethanol, water and most organic solvents |
| Vapour Pressure | 0.4 kPa at 20 °C |
| Refractive Index | 1.4075 |
| log P (octanol/water) | 1.16 |
Source: PubChem CID 31260 (HSDB, ICSC, Joint FAO/WHO Expert Committee on Food Additives (JECFA))
Identification
| Property | Value |
|---|---|
| SKU | 20019346 |
| CAS Number | 123-51-3 |
| IUPAC Name | 3-methylbutan-1-ol |
| EC Number | 229-179-5 |
| Molecular Formula | (CH3)2CHCH2CH2OH |
| Molecular Weight | 88.15 |
| Exact Mass | 88.0888 |
| SMILES | CC(C)CCO |
| InChIKey | PHTQWCKDNZKARW-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H12O/c1-5(2)3-4-6/h5-6H,3-4H2,1-2H3 |
| PubChem CID | 31260 |
| UN Number | UN1105 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29051910 |
| Tariff Code | 2905190098 |
Safety & GHS
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Flammable
GHS02
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Corrosive
GHS05
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Health Hazard
GHS07
Hazard statements
- EUH066 Repeated exposure may cause skin dryness or cracking
- H226 Flammable liquid and vapour
- H315 Causes skin irritation
- H318 Causes serious eye damage
- H332 Harmful if inhaled
- H335 May cause respiratory irritation
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1-Butanol, 3-methyl-
- 2-Methyl-4-butanol
- 3-Methyl-1-butanol
- 3-Methylbutan-1-ol
- 3-Methylbutanol
- Iso-amylalkohol
- Isoamylol
- Isobutylcarbinol
- Isopentanol
- Isopentyl alcohol
Frequently asked questions
What is isoamyl alcohol commonly used for?
Isoamyl alcohol is primarily used as a solvent in perfumes, flavors, and pharmaceuticals, as well as in the production of esters for fruity aromas.
What is the chemical formula and molecular weight of isoamyl alcohol?
The chemical formula is **(CH₃)₂CHCH₂CH₂OH**, and the molecular weight is **88.15 g/mol**.
How should isoamyl alcohol be stored?
Store isoamyl alcohol in a tightly sealed container at **ambient temperature**, away from ignition sources and oxidizing agents.
What grades of isoamyl alcohol does Molekula supply?
Molekula supplies **technical and USP-grade isoamyl alcohol**—confirm availability for your specific application.
Can Molekula supply isoamyl alcohol in bulk quantities?
Yes, Molekula can supply isoamyl alcohol in **bulk**, with quantities tailored to your production needs—contact us for pricing and logistics.
What documentation comes with an order of isoamyl alcohol?
Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.